From patchwork Mon May 27 16:08:35 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miles Chen X-Patchwork-Id: 10963375 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CC33D76 for ; Mon, 27 May 2019 16:09:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BA87C2868D for ; Mon, 27 May 2019 16:09:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AD4EB287E5; Mon, 27 May 2019 16:09:09 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 610BA287D2 for ; Mon, 27 May 2019 16:09:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=uHCuHOpiq+RBy3u/VWbfAXuicjpEI1rVYliXzZxWJjg=; b=HUBlMi8L+Ju6m9 qvoueyITSlcaTHCzxNiqg1ZEoxWOJbWG+MtWCxI5tlP83AWD1IcXUBZKNbihnXji+lRfQUbs9M9aI QoDYCyqoqINYzEu8KzgxgU7SWVlF6gXNAsL3RDEn32IlKmLCgEhPFFxsnbd4QH+rEe5swU63J9Ful ZcR65xgGjM4eazMRZgRG+/nNd0Kq5dft+I7e7pR73LKcyQG96f3YzfrqoGRNFlvREvSHVX9A4AoUp V8OvYl+cpBVk+LcguZN8uaw9jPZ1G9FfSjehch/MtiVkWwQzJgD770wGdKSZ5/jirOf/+cF7j/22m LZN0RWQ0hflxSZaIAjEQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hVIBM-00054z-Pw; Mon, 27 May 2019 16:09:04 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hVIBI-000540-BC; Mon, 27 May 2019 16:09:02 +0000 X-UUID: 2461e03fef02428a8731189a225cf1d9-20190527 X-UUID: 2461e03fef02428a8731189a225cf1d9-20190527 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1088421531; Mon, 27 May 2019 08:08:52 -0800 Received: from mtkmbs08n1.mediatek.inc (172.21.101.55) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 27 May 2019 09:08:51 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs08n1.mediatek.inc (172.21.101.55) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 28 May 2019 00:08:36 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 28 May 2019 00:08:36 +0800 From: Miles Chen To: Catalin Marinas , Will Deacon Subject: [PATCH] arm64: mm: make CONFIG_ZONE_DMA32 configurable Date: Tue, 28 May 2019 00:08:35 +0800 Message-ID: <1558973315-19655-1-git-send-email-miles.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190527_090900_384775_1C51702E X-CRM114-Status: GOOD ( 10.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Miles Chen , linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, wsd_upstream@mediatek.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This change makes CONFIG_ZONE_DMA32 defuly y and allows users to overwrite it. For the SoCs that do not need CONFIG_ZONE_DMA32, this is the first step to manage all available memory by a single zone(normal zone) to reduce the overhead of multiple zones. The change also fixes a build error when CONFIG_NUMA=y and CONFIG_ZONE_DMA32=n. arch/arm64/mm/init.c:195:17: error: use of undeclared identifier 'ZONE_DMA32' max_zone_pfns[ZONE_DMA32] = PFN_DOWN(max_zone_dma_phys()); Signed-off-by: Miles Chen --- arch/arm64/Kconfig | 3 ++- arch/arm64/mm/init.c | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 76f6e4765f49..9d20a736d1d1 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -260,7 +260,8 @@ config GENERIC_CALIBRATE_DELAY def_bool y config ZONE_DMA32 - def_bool y + bool "Support DMA32 zone" + default y config HAVE_GENERIC_GUP def_bool y diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index d2adffb81b5d..96829ce21f99 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -191,8 +191,10 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max) { unsigned long max_zone_pfns[MAX_NR_ZONES] = {0}; +#ifdef CONFIG_ZONE_DMA32 if (IS_ENABLED(CONFIG_ZONE_DMA32)) max_zone_pfns[ZONE_DMA32] = PFN_DOWN(max_zone_dma_phys()); +#endif max_zone_pfns[ZONE_NORMAL] = max; free_area_init_nodes(max_zone_pfns);